Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e350ebacafc20ff…

MALICIOUS

PDF

69.3 KB Created: 2021-03-06 15:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bed2d26a8d9905eb1825a3be7767243 SHA-1: d77a1903da3fa7b6bc75ba1891aadc41db476e3e SHA-256: 9e350ebacafc20ff0f88d20e878aa2319634830ca83d7b65afa5a89a1dcd9795
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The heuristic 'SE_CALLBACK_LURE' indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. The embedded URL 'https://ponafet.ru/123?utm_term=coachmen+campers+for+sale+in+georgia' likely serves as part of this lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/123?utm_term=coachmen+campers+for+sale+in+georgia
    • https://cdn.sqhk.co/biwizalibe/crzjjyb/18671189844.pdf
    • https://cdn.sqhk.co/jesupasuzoku/fEFEjgy/jolukupe.pdf
    • https://cdn.sqhk.co/tosilura/Fhjjazl/crashlands_best_pet_in_the_game.pdf
    • https://cdn.sqhk.co/gigijuke/QieQ5hh/folirip.pdf
    • https://cdn.sqhk.co/gemadaruvow/VhgGGjg/mulirawujotu.pdf
    • https://cdn.sqhk.co/rojarasam/ibFxjj8/50455984903.pdf
    • https://cdn.sqhk.co/zolilobup/jdgy35Z/kitten_birthday_ecard.pdf
    • https://cdn.sqhk.co/kafodarifab/XFhejco/skyrim_stealth_archer_assassin_build.pdf
    • https://cdn.sqhk.co/jutafegobexe/dLnTFgh/call_from_siren_head.pdf
    • https://cdn.sqhk.co/temirikuji/yja9Sii/15137689585.pdf
    • https://cdn.sqhk.co/gobajejuz/gijhigh/45593697340.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e450cb94-dcd2-446e-aa8f-2016bdc755d9/nombre_de_los_grupos_o_familias_de_la_tabla_periodica.pdf
    • https://uploads.strikinglycdn.com/files/fbb98c57-c4ba-45e4-a5b9-e1d25aa76366/how_to_connect_steelseries_controller_to_xbox_one.pdf
    • https://s3.amazonaws.com/tokudapele/5856887861.pdf
    • https://s3.amazonaws.com/wibedubosateg/54211342780.pdf
    • https://s3.amazonaws.com/dosalapasenow/time_charter_party_forms.pdf
    • https://uploads.strikinglycdn.com/files/4e67c342-1ac2-45f2-a025-6bd0642553c2/4539063329.pdf
    • https://s3.amazonaws.com/gudukupir/call_of_duty_zombies_apk_apkpure.pdf
    • https://s3.amazonaws.com/sojaxub/baffin_bay_fishing_guides_riviera.pdf
    • https://s3.amazonaws.com/faluzotixupi/biblia_reina_valera_1995_apk.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d36f.bin
17c4c61c216b0f12edd16bdab20448c166085498d92ed574178ed94fc97d0a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 5332 bytes
font_01_sfnt_off0000e567.bin
dc4a5498824d8187142ee93ea35bc2fe9363e58089bafe11868f6303040368a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE567 10148 bytes

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